Naval Rank Flags: Here, the National Geographic of 1917, page 347, item #559 -#560 - #561 - #562 -
#564 and #565 reflects the full complement of rank flags. These were apparently
adopted in the mid-1913 time-frame and accounts for the fact that the Royal
Navy Signaling Handbook of 1913 illustrated
only the Naval Ensign.C. Eugene Baldwin, 10 December 1998

This flag is a dark blue field with crossed
anchors of white, centered. I have no further information on this flag, but
like so many others, indications are that it survived until the Nationalist
take-over in 1928 and it underwent a design modification at that time.C. Eugene Baldwin, 10 December 1998

"Minister of Marine" is translation according to Flags of Maritime Nations
(1914). It is the same position of Minister of the Navy and Secretary of the
Navy. The current name of this position is "Naval Commander-in-chief", renamed
since 1946.Akira Oyo, 01 April 2014

The radius of each anchor equaled to one-third the width of the flag.
Proportions 3:4. Miles Li, 01 May 2015

Description: The flag of the Minister of the navy is shown in
both the 1919 and 1930 edition of Jane's Fighting Ships. It
is a blue flag with two white crossed anchors.
Glen Robert-Grant Hodgins, 30 March 1998

The nationalist takeover of 1928 caused a minor design
modification. I could find no documentation to support the
note I have that the design remained the same except a narrow
border was placed along the edges. As no evidence exists,
from my available sources, it does stand the test of rational
deduction since all other rank flags were modified by adding,
if not already present, narrow red elements.
C. Eugene Baldwin, 6 December 1998

It was also used in Taiwan, but abolished in 1959.Akira Oyo, 29 March 2014

Description: This flag is listed in the 1919 edition of Jane's Fighting Ships. It consists of the canton of the Taiwan flag. The 1930 edition of Jane's Fighting Ships shows a similar Admiral rank flag with a thin horizontal stripe running across the top edge of the flag. Glen Robert-Grant Hodgins, 30 March 1998

The former rank flag was the
KMT [Nationalist Chinese
Party] flag, or dark blue field with white, twelve-ray sun centered. This
flag would be changed, or slightly modified in 1928 by the Nationalist Government.
Thus, the adoption of this flag as
the jack, necessitated a modification to the
Admiral's Rank Flag. This was accomplished
by adding a narrow red stripe along the topmost edge of the existing flag.Note: A story told to me many years ago involved the selection of the
Chinese Nationalist jack and admiral rank flag went something to this
effect. Several Admirals complained to Chiang Kai-shek about taking all
the admiral flags for jacks and they were left without the highest naval
rank flag. So until more flags were approved and manufactured, the admirals
would be undistinguished by an approved rank flag. To which he replied
by grabbing a Vice-Admiral's flag near by and turning it upside down and
saying "Admiral behold you newly approved rank flag." Which may explain
why all the remaining flags were changed to include red stripes in some
manner.C. Eugene Baldwin, 10 December 1998

Chinese Naval Jack had been the same with the
Quinta-color flag (National Flag) since 1912 to 1928. Since 1924 to 1928,
KMT's flag had been its naval jack, but not Chinese
Naval Jack. Meanwhile, KMT also revised its Admiral's ensign, which became
Chinese Admiral's Ensign since 1929.Akira Oyo, 30 March 2014

Basically the same as the post-1928 naval jack, but the diameter of the sun
was only half the width of the flag, with the length of each ray equaled to only
half the radius of the disc. Proportions 3:4.Miles Li, 01 May 2015

Basically the same as the post-1928 Vice Admiral flag, the diameter of
the sun being half the width of the flag, but the length of each ray
equaled to only half the radius of the disc, and the width of the red
stripe equaled to one-eighth the width of the flag. Proportions 3:4.Miles Li, 01 May 2015

Basically the same as the post-1928 Rear Admiral flag, the diameter of
the sun being half the width of the flag, but the length of each ray
equaled to only half the radius of the disc, and the width of each red
stripe equaled to one-eighth the width of the flag. Proportions 3:4.Miles Li, 01 May 2015

The commodore's rank flag would be identical to the
Admirals except it would be a swallow-tail/forked configuration.C. Eugene Baldwin, 10 December 1998

The diameter of the sun was half the width of the flag, with the length of
each ray equaled to half the radius of the disc. Proportions 3:4; the length
from the hoist to the mid-point of the swallow-tail was 2.5/4 the length of the
flag.Miles Li, 02 May 2015

Basically the same as the post-1928 Senior Officer's broad pennant,
but the diameter of the sun was only half the width of the flag, with
the length of each ray equaled to only half the radius of the disc,
and the width of the red stripe equaled to one-eighth the width of the
flag. Proportions 3:4; the length from the hoist to the mid-point of
the swallow-tail was 2.5/4 the length of the flag.Miles Li, 02 May 2015

Basically the same as the post-1928 Masthead Pennant, the diameter of
the sun was 3/4 the width of the pennant, but the length of each ray
equaled to only half the radius of the disc. Proportions 1:40; the
length of the blue hoist was one-fifth the length of the pennant.Miles Li, 02 May 2015